Personally, I am disappointed with the 620. I say hold off, and wait until Oly releases a SLR with the same TruepicV processing that's on the EP1. 620 is too noisy.

This. Plus I'd like to have some HD video to play around with using the SLR lenses.

I chose the E520 pretending that I wouldn't do a lot of low-light photography. I should be more honest with my needs in the future.

Also, E520 body again please. This is primarily what swayed me away from the Canon 450D. If it ain't broke, don't fix it.

I was waiting for the Pentax K-x as my first SLR, partly for the video & burst speed, but also for auto HDR. I've heard that the E620 & E30 have some kind of automatic bracketing overlay - is this similar to HDR or something quite different?

Personally, I am disappointed with the 620. I say hold off, and wait until Oly releases a SLR with the same TruepicV processing that's on the EP1. 620 is too noisy.

This. Plus I'd like to have some HD video to play around with using the SLR lenses.

I chose the E520 pretending that I wouldn't do a lot of low-light photography. I should be more honest with my needs in the future.

Also, E520 body again please. This is primarily what swayed me away from the Canon 450D. If it ain't broke, don't fix it.

I was waiting for the Pentax K-x as my first SLR, partly for the video & burst speed, but also for auto HDR. I've heard that the E620 & E30 have some kind of automatic bracketing overlay - is this similar to HDR or something quite different?

Can you expand on the bolded part? What do you normally shoot?

When I first got interested in DSLR's, I wanted to shoot stuff indoors (among other things), even moving subjects, without a flash. I was very picky about noise too. It took me a while, but I finally realized I needed a full frame DSLR to get that kind of performance. Since I wasn't willing to pay extra or put up with the increased bulk, I've scaled down my expectations and settled for cropped sensor DSLR's... with flash guns.